ifs.fnd.record

Class FndKeyGen

java.lang.Object

ifs.fnd.record.FndKeyGen

public final class FndKeyGen
extends java.lang.Object

Class for generating unique keys. The class generates Universally Unique Identifiers per IETF Draft specification.

See: http://www.ietf.org/internet-drafts/draft-mealling-uuid-urn-05.txt

The format of generated keys are compatible with Microsoft standard for GUIDs. The class supports two types of UUIDs: time-based UUIDs (version 1) and randomly generated UUIDs (version 4). Time-based UUIDs are unique and fast, but possible to guess. Randomly generated UUIDs are secure (impossible to guess), but slower at startup and slower at run-time. Their uniqueness depends on quality of implementation of java.security.SecureRandom.

Method Summary

Methods

Modifier and Type	Method and Description
static void	main(java.lang.String[] arg)
static java.lang.String	newId() Return a String that contains globally unique id.
static java.lang.String	newRandomId() Return a String that contains globally unique id.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

newId

public static java.lang.String newId()

Return a String that contains globally unique id.

Returns:

a new time-based UUID

newRandomId

public static java.lang.String newRandomId()

Return a String that contains globally unique id.

Returns:

a new randomly generated UUID.

main

public static void main(java.lang.String[] arg)
                 throws java.lang.Exception

Throws:

java.lang.Exception